Canada, Alberta, British Columbia (southeastern region), Northwest Territories (most of territory), Nunavut (western), Saskatchewan – only Lloydminster and surrounding area, United States, All of Colorado, Montana, New Mexico, Utah, and Wyoming, All of Navajo Nation, extending into Arizona, Most of Idaho (southern section), Western parts of Kansas, Nebraska, South Dakota, and Texas, Southwestern parts of North, Dakota, Small parts in east of Oregon and Nevada, Mexico, Baja California Sur, Chihuahua (adopted UTC−07 in 1998), Nayarit (most of state), Sinaloa,